We also have the TH400 Super Drum assembly. It uses a sprag with 36 elements that are 30% wider than the traditional 34 element upgrade. We recommend this drum for 1000+ HP/TQ combos, higher rpm combos, and in some off road applications where sprag failure is an issue. We are making these in house now to save our customers money. The inner race is made of 8620 bearing grade material heat treated and pressed onto the drum. Frictions, steels, and pressure plate included.

We also offer an aluminum version of the Super Drum. It lightens the rotating mass and reduces the load on the sprag.
Pricing is $925.

TH400 Forward Hub-

Rollerized-
We sell a stock forward hub that is machined to accept a torrington bearing at the critical direct drum mating area.
The direct drum spins approx 85% of engine rpm in reverse in low gear, while sitting next to it, the forward hub is spinning engine rpm forward. At 6000 rpm this is over 11,000 rpm differential. This is why we use a torrington in our builds.
Rollerized stock forward hub- $50
The stock forward drive hub needs attention anytime a transbrake is used or the power levels exceed 750 HP/TQ.
We sell a billet version that also incorporates the torrington bearing.
Rollerized billet forward hub- $150

We offer various gearsets. The most popular are our 2.10 and 2.75 gearsets. The 2.10/1.40 ratio gearset is used when the stock 2.48 ratio provides too much starting line ratio and/or the combo could use a closer ratio for less rpm drop on the gear change. The 2.75 ratio is great for heavier combos or offroad where more low gear ratio is desirable.

TH400 Output Shafts-
Passenger car and truck shafts differ as seen in the photo. The issue is when using a truck output shaft the regular slip yoke used on passenger cars loses over 1/2" of engagement and in many cases the driveline must be shortened a corresponding amount.
Be sure you use the proper output shaft for the application. The quick easy method of identification is look for a threaded hole in the end of the shaft. If the hole is threaded you have the truck shaft.
We are able to machine the truck shafts to take the place of the hard to find passenger car shafts.
Machined output shafts are $50.
We also have other configurations of output shafts. Contact us for your needs.

TH400 Transbrake Valve body-

A high quality fast releasing TH400 Pro-Brake. It is our most popular valve body, excellent design with reasonable price. Reverse manual design with excellent release circuits.

$350 shipped within the cont. U.S

Jake's Performance Exclusives!

New TH400 Valve Body Recalibration KitThis kit is designed for the big power automatic shift combos. It not only improves the shifts, it makes several circuit changes that allow the transmission to live in an environment where most builders would recommend a full manual VB. Allows manual/automatic shifting, more direct clutch apply area, firmer shifts, eliminates 3rd gear pressure drop, intermediate clutch failure in big power combos, and excessive reverse pressure.Intended for use during rebuild to save the builder time and provide greater quality to your rebuild. No need to clean/modify the stock plates.

TH400 Automatic Shift "Cheater" TransbrakeAll new design transbrake that is activated by the shifter position. Great for use in a street/strip combo or where an electrically operated transbrake isn't allowed.

Allows normal automatic features when operated in the Drive position. Quick release design with additional features built in for bigger power cars.
$250

TH400 Automatic Shift Electrically Operated TransbrakeOperates as a stock type valve body with automatic shifts and modulated line pressure. Engage manual low, hit the button and you have a transbrake. Built to order. $600

TH400 TransGo 1-2 Reprogramming Kit-
While we don't use the TransGo kit in our builds, it is an excellent performer in musclecars and hotrods up to 500 HP. It offers ease of installation for the DIY'er and is the only way to dual feed a TH400 without internal modifications. This is a major advantage of the TransGo kit over other TH400 valve body kits.
$70

TH400 Output Shaft Torrington Kit-
The TH400 with helical cut planetaries thrust loads to the rear. This loads the output shaft to case thrust location tremendously in racing applications, particularly with heavier vehicles.
We rollerize the rear thrust in all of our builds. These parts are also included in our TH400 Rebuild Kits however we offer them seperately for upgrading other less complete kits. No machining required, near drop in installation. Rear endplay shims included.
$25
Shown on top is stock selective 3 tang thrust washer and brass thrust washer.
Shown below is the kit.